Shuttle for weaving-looms.



R. FABNWORTH & T; T. JACKSON.

SHUTTLE FOR WEAVING LOOMS. APPLICATION FILED SEPI. 28. m2.

1,286,969. Patented Dec. 10, I918.

tn: IIOIIII runs on. rnmunm. vusunwvon. n c.

barren sTaTnsraTnnT snares.

BoBEn FARNWORTH AND THOMAS TROUGHTON JACKSON, or BOLTON, ENGLAND,

ASSIGNORS To BONWEB, INCORPORATED, on BOSTON, MASSACHUSETTS, A CORPO- RATION 0F MAINE.

SHUTTLE FOR WEAVING-LOOMS.

Patented Dec. 10, 1918.

Application filed September 28, 1912. Serial No. 722,965.

To all whom it may concern:

Be it known that we, ROBERT FARNwoRTH and THOMAS TROUGHTON JAcKsoN, subjects of the King of Great Britain and Ireland, and residents of Bolton, in the county of Lancaster, England, cotton manufacturer and engineer, respectively, have invented certain new and useful Improvements in Shuttles for eaving-Looms, of which the following is a specification.

Our invention has reference to improvements in shuttles for weaving looms and more particularly to such as are employed in small ware looms, or looms of thePoyser type, the object being to provide an improved form of shuttle body and improved tension and braking arrangements for the weft.

Our invention will be fully described with reference to the accompanying drawings in which- Figure 1 is a front elevation of the improved shuttle,

Fig. 2 side elevation,

Fig. 3 plan and Fig. 4 sectional side elevation.

Our invention consists in forming the shuttle body a. from one piece of sheet metal, preferably steel, which is bent up at the ends 5) to form bearings c for holding the weft bobbin d while it is so shaped at the front corners e as to stroke down any slack warp threads that may protrude in the bottom of the warp shed and to stroke up by means of the inclined front edges f in a similar manner any slackends in the upper portion of the warp shed.

A further feature is the arrangement of the tension lever g which is pivoted at h and is of hooked formation at one end 2' the opposite end being formed into an arm j adapted to come in contact with the loom stopping mechanism when the. weft breaks. To pull the hooked end i of the tension lever toward the bobbin d against the tension of the weft an elastic member is employed. This may consist of an elastic band is in the form of a loop one end being hooked on to the lever and the other to the bent end of wire pivot rod m, carried in bearings m struck up from the body of the shuttle. Pivoted on said rod m is the spring-controlled brak-ing plate a for preventing over running of the weft bobbin (Z. 0 is the controlling spring, of which one end bears against the braking plate 71., so that the plate is held yieldingly in engagement with the bobbin. The weft p is passed around the hook i of the tension lever g in a novel way which is facilitated by an improved construction of the nose 9 of the shuttle. This nose is bent up and is formed with a slot 8 and withca rearwardly curved cross bar or loop r. The tension lever is so pivoted that the hook z thereof may be swung forwardly through the slot 8 past the loop 1', whereupon the weft can be simply passed on to the hook 2'. When the tension lever is drawn back by the elastic band, a loop of the weft is drawn around the loop 1" of the shuttle nose, and the weft then emerges from the slot as shown by the direction of the weft in Fig. 3. Should the weft break the elastic band is pulls the hooked end a of the tension lever toward the weft bobbin d and brings the arm j at the other end into position for stoppingv the loom. A projection t is employed to prevent the tension lever turning too far.

One of the bearings c is circular while the other is openly-slotted so that the bobbin d can be readily. interchanged.

The arm j may be adapted to operate any suitable form of loom stop mechanism which does not, however, constitute any part of our present invention.

The improved shuttle is simple and cheap to construct and is very effective for the purpose for which it is intended.

What we claim as our invention and desire to secure b y-Letters Patent is 1. A loom shuttle, comprising a body having bearings for the bobbin, and having a nose formed with a slot, and a tension lever pivoted to the body intermediate the bobbin and the nose and having a hooked end adapted to operate the loom stop mechanism,

said parts being arranged so that normally the thread passes from the bobbin over the! loop, around the hook in the lever and outward from the slot, whereby the said arm of the lever is normally held in inactive position when the thread is under tension.

3. A loom shuttle, comprising a sheet metal body with upturned ends to constitute bearings for the bololoin, and an upturned nose transversely slotted to providea rearwardly curved loop, a spring-tensioned brake to engage the bobbin, a pivot rod therefor having a forwardly extending end,

a tension lever having a hook and pivoted on said body to allow the hook to swing forwardly through the slot to a point beyond the loop, and tension means connecting said lever with the end of the pivot rod.

In testimony whereof we have hereunto set our hands in the presence of two witnesses. I

- ROBERT FARNWORTH.

THOMAS TROUGHTON JACKSON. Witnesses:

AMY EVELINE EvrNs, WILLIAM HENRY TAYLOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

